ISMSM News

This study focuses on the differential allosteric regulation by the ubiquitous signaling molecule, cAMP, in the cAMP receptor protein from Escherichia coli (CRPEcoli) and from Mycobacterium tuberculosis (CRPMTB). By introducing structurally homologous mutations from allosteric hotspots previously identified in CRPEcoli into CRPMTB and examining their effects on protein solution structure, stability, and function, we aimed to determine the factors contributing to their differential allosteric regulation. Results from this study indicate that the structural similarity between two allosteric proteins from distantly related bacteria does not reliably predict their allosteric behavior nor identify allosteric hotspots involved in the response to molecular signals.

Georgetown Researchers Uncover Key Differences in Bacterial Protein Regulation

February 11th, 2025

A new study led by Dr. Rodrigo Maillard at Georgetown University, “Identifying Allosteric Hotspots in Mycobacterium tuberculosis cAMP Receptor Protein through Structural Homology,” published in Biochemistry sheds light on how bacteria regulate their genes, challenging long-held assumptions about protein behavior. Published in Biochemistry, the research compares how two bacterial species—Escherichia coli and Mycobacterium tuberculosis—use a signaling molecule called cyclic AMP (cAMP) to control important cellular functions.…

Advancing Biomimetic Materials at Georgetown University

January 29th, 2025

Researchers within the Institute for Soft Matter Synthesis and Metrology (ISMSM) at Georgetown University, in collaboration with TU Eindhoven, have developed groundbreaking synthetic gel materials that mimic the dynamic properties of biological extracellular matrices. …

Unveiling the Sticky Secrets of Giardia: How a Parasitic Cell Masters Attachment

December 16th, 2024

Recent developments from Prof. Van Keuren and his students. An interdisciplinary team of researchers, led by Georgetown faculty members Biology Professor Heidi Elmendorf and Physics Professor Jeff Urbach used a combination of high-resolution imaging, computational modeling, theoretical analysis, innovative experimentation, to conclusively demonstrate that a version of the flow-based model accurately captures the biophysics of Giardia attachment.…

Celebrating ISM Day 2023

September 26th, 2023

Researchers from ISM and affiliates gathered to discuss current research and future opportunities. …

Graphic with yellow arrow demonstrating dielectric continuum and structures of the different ion-pair complexes mentioned

Recent Research from Prof. Weiss

July 20th, 2023

A recent publication from ISM members investigating the dependence of proton transfer in ionomers on the dielectric constant of the solvent. …

Physics Major Wins Award

October 18th, 2022

Sophie Taylor, and undergraduate researcher in an ISM lab, won an award for her poster at PhysCon. …

Prof. Peter Olmsted

New Publication from Prof. Olmsted

May 2nd, 2022

ISMSM faculty member Prof. Peter Olmsted recently published the paper “Probing the nonequilibrium dynamics of stress, orientation, and entanglements in polymer melts with orthogonal interrupted shear simulations”. …

Recent Research from ISMSM Collaboration

March 7th, 2022

Updates on recent research and upcoming publications from Professor Kertesz of the ISMSM and collaborators concerning novel conjugated polymers and their properties.…

Prof. Paranjape Publishes Paper in Langmuir

February 9th, 2022

Professor Paranjape, with graduate student O’Brien, recently published a paper introducing a model for the dynamic surface tension of surfactant-enhanced polydimethylsiloxane. …

Updates for the Weiss Group

December 8th, 2021

A summary of the recent activity of the Weiss group, including a recent publication and presentations given. …

Prof. Miklos Kertesz receives NSF Grant

September 30th, 2021

The project “Collaborative Research: Aggregation mechanisms in carbon nanomaterials based on pi-conjugated polycyclic aromatic hydrocarbons” joint between Miklos Kertesz (Department of Chemistry and ISMSM at Georgetown University) and Prof. Hans Lischka at Texas Tech University (Lubbock, TX) received a new NSF grant…

Prof. Peter Olmsted

Professor Peter Olmsted elected a Fellow of the Society of Rheology

May 7th, 2021

Professor Peter Olmsted has been elected a Fellow of the Society of Rheology. Fellows are selected based on distinguished scientific achievement, significant technological accomplishment, and/or outstanding scholarship in the field of Rheology. Service to the Society is also an important component to Fellowship status.…

Prof. Jeff Urbach on Podcast with Provost Groves

February 23rd, 2021

As part of the Provost’s Podcast: Faculty in Research, Prof. Jeff Urbach discussed his love of physics and his career in science with Provost Robert Groves. Listen to their…

Prof. Edward Van Keuren

Prof. Van Keuren Receives Two New NIH Grants

November 19th, 2019

Prof. Ed Van Keuren has recently received two new grants from the National Institutes of Health. One is for the development of nanoparticles of a novel copolymer to treat acute kidney injury.…

Prof. Olmsted Co-Authors Paper in Nature Physics

December 13th, 2017

December 11, 2017 — A paper co-authored by Georgetown College physics professor Peter Olmsted has been published in the journal Nature Physics. The paper, “Frustration and thermalization…

Active Materials Project Summer School

June 1st, 2017

The Active Materials Project summer school will run from Sunday, June 11th through Thursday, June 15th, 2017 on the Campus of Georgetown University. The event will bring together graduate…

Adsorption of proteins on patterned surfaces

September 1st, 2016

Research efforts led by Professor Jong-in Hahm, recently published in ACS Nano, 2016, 10 (8), pp 7705–7720, DOI: provide new insight into controlling the adsorption configuration, backbone…

A Crack in the Mystery of ‘Oobleck’—Friction Thickens Fluids

April 22nd, 2016

By revealing missing details behind the odd behavior of a science-fair favorite—a soupy mixture known as “oobleck” that switches back and forth between liquid and solid— scientists from the National Institute of Standards and Technology (NIST) and Georgetown University could help to end a long-running scientific debate and improve processes ranging from pouring concrete to making better body armor.…

USA Science and Engineering Festival

April 20th, 2016

The 4th USA Science & Engineering Festival was held April 16-17, 2016 at the Walter E. Washington Convention Center in Washington, D.C. Well over 700 people visited the Georgetown University had a booth covering Biology, Physics and Chemistry, including making ice cream using liquid nitrogen!…

NIST PREP-MML Program Awarded to Georgetown University (up to $7.7M)

March 7th, 2016

On 1 February 2016 Georgetown University (Departments of Chemistry and Physics) was awarded a Professional Research Experience Program (GU PREP-MML), from the National Institute of Standards and Technology (NIST). The program is led by Peter Olmsted in the Department of Physics, and will begin in summer 2016.…